[Xperia Z Original Android Development] N/A:
The device is black (not brown) and it came with a bug (I can only guess) in FW...

the XZ - C6603 was then boot-looping and only getting to the screen with text Crash Detected.... saving dump..

bla bla because I can only guess it has a built in CrashDog (developers device ofc)...

tried to update with SEUS and PC Companion, even with Emma...

none of them can detect my XZ... that i just got :(

then after hours no success i was able to only get into FASTBOOT mode...

in which i successfully (without even trying to unlock boot-loader) used Doomlords method for rooting

after which i flashed TWRP recovery and then was able to get into Recovery in which i tried KA02 ROM, no success again boot-looping with CrashDog screen and dumping crash report info...

Then... fully charged the phone... wiped everything and tried...XperiaLite Rom aka RomAmur for XZ

and I GOT a successful boot into ROM... after trying to reboot the phone i got the CrashDog screen again and I wasn't able to get into ROM again, only boot-looping,

then after I dunno what combination of keys Volume Up+POWER holding for 5 seconds.. then 15 seconds (aka - battery out mode) then again with all keys pressed and released VOLUME DOWN+VOLUME UP+POWER (that didn't actually helpe i was just so frustrated that i started to press every possible combination just to see will it help)

and somehow/finally I got into ROM again...

So now my problem is that i can not Power off my XZ I just keep it charged at all times

my WiFi, and Bluetooth and tethering cannot start (maybe RomAmur ROM problem)...

Flashmode appears to be entered with Volume Down + USB cable Pluged IN

because the XZ gives the GREEN LED LIGHT and doesn't boot to ROM just WAITS...

but Flashtool also waits on the popup screen with the instructions how to enter flash mode (i have used Flashtool with my previous LT18i/Arc S so i know what should happen but doesn't happen in Flashtool after that popup screen with the phone picture and the instructions appear)

The OS (win 7 x64) at the same time asks for drivers with the related Qualcomm VID&PID...

and in that way tells me that all installed drivers in Flashtool-drivers.exe package are not the ones my PC is asking me for :(

I wonder where is that CrashDOG stored...

can i remove it with FLASHTOOL doing fool wipe and full FTF flash ???.. but i can not enter the Flashmode only Fasstboot mode...

Can i only FASTBOOT flash kernel.sin and system.sin and hope that boot-loop is solved as well as that CrashDog jumping out and not letting me to boot to SYSTEM/ROM/OS...

and sometimes instead of CrashDog Display I get BLUESCREEN like in Windows OS (BleScreenOfDeath) just no text only BLUE COLOR SCREEN... and boot-loop again

Am I lucky or not :)

Maybe Flashtool 0.9.10.2beta4 could start the FTF flashing process if it contained drivers for qualcom serial port im my XZ, I found info that X10 and some other Sony devices did enter FLASHMODE and were showing as Qualcom serial port...

dunno if that is correct

P.S. I know my text will take up an entire portion of this page and your screen (truly sorry for that and i apologize for that to all the readers) but this is my whole story and the problem with XZ